Membrane control type sustained-release improving agent suitable for southern acid red soil and preparation method of improving agent
A membrane-controlled, acid red technology, applied in chemical instruments and methods, soil conditioning materials, other chemical processes, etc., can solve the problems of local pH surge at the soil fertilization point, reducing the effectiveness of phosphate fertilizers, and mineral nutrient loss, etc. Conducive to the continuous absorption of nutrients, improving the effectiveness of phosphate fertilizers, and reducing the toxicity of aluminum in red soil
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Embodiment 1
[0038] The raw material composition of quick-release layer in the present embodiment is: biochar 1.2kg, magnesium oxide 4.5kg, silicon calcium magnesium potassium mineral fertilizer 0.2kg, binder is: hypromellose 0.15kg, sodium carboxymethylcellulose 0.15kg and water 1.2kg.
[0039] The raw materials of film-controlled slow-release granules are: biochar 3.85kg, ammonium phosphate 22.68kg, silicon calcium magnesium potassium mineral fertilizer 0.790kg, binders: hypromellose 0.85kg, carboxymethylcellulose sodium 0.85 kg and 6.8kg of water, the coated slow-release materials are: ethyl cellulose 2.05kg, chitosan 5.47kg, dibutyl phthalate 1.09kg and water 2.73kg.
[0040] The preparation method of the film-controlled slow-release improver suitable for southern acidic red soil comprises the following steps:
[0041] (1) Preparation of membrane-controlled slow-release granule raw material mixture powder: the raw material biochar, phosphorus-containing material and silicon-calcium-ma...
Embodiment 2
[0047] The raw material composition of quick-release layer in the present embodiment is: biochar 2.9kg, calcium oxide 3.8kg, silicon calcium magnesium potassium mineral fertilizer 1.0kg, binder is: hypromellose 0.04kg, sodium carboxymethylcellulose 0.04kg and water 1.92kg.
[0048] The raw materials of film-controlled slow-release granules are: biochar 7.68kg, ammonium phosphate 17.28kg, silicon calcium magnesium potassium mineral fertilizer 1.92kg, binders: hypromellose 0.15kg, carmellose sodium 0.15kg kg and 7.37kg of water, the coated slow-release materials are: ethyl cellulose 1.69kg, chitosan 3.17kg, dibutyl phthalate 1.06kg and water 1.76kg.
[0049] The preparation method of the film-controlled slow-release improver suitable for southern acidic red soil comprises the following steps:
[0050] (1) Preparation of membrane-controlled slow-release granule raw material mixture powder: the raw material biochar, phosphorus-containing material and silicon-calcium-magnesium-pot...
Embodiment 3
[0056] The raw material composition of quick release layer in the present embodiment is: biochar 1.5kg, magnesia 3.0kg, silicon calcium magnesium potassium mineral fertilizer 0.5kg, binder is: hypromellose 0.025kg, sodium carboxymethyl cellulose 0.05kg and water 1.275kg.
[0057] The raw materials of film-controlled slow-release granules are: 6.36kg of biochar, 12.72kg of ammonium phosphate, 2.12kg of silicon calcium magnesium potassium mineral fertilizer, and the binders are: 0.10kg of hypromellose, 0.20kg of sodium carboxymethylcellulose kg and 5.0 kg of water, and the coated slow-release materials are: ethyl cellulose 0.96 kg, chitosan 2.40 kg, dibutyl phthalate 0.72 kg and water 1.20 kg.
[0058] The preparation method of the film-controlled slow-release improver suitable for southern acidic red soil comprises the following steps:
[0059] (1) Preparation of membrane-controlled slow-release granule raw material mixture powder: the raw material biochar, phosphorus-containi...
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